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MAGfire 24V 5A EN54-4 Certified Fire Alarm PSU

£29199
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Description

The MAGfire 24V 5A is a power supply unit certified to EN54-4 for use in fire detection and alarm systems. It delivers a regulated 27.6V DC output at up to 5A, providing both system power and battery charging for fire alarm control panels, detectors, sounders and auxiliary devices that require a compliant power source.

Designed for commercial, industrial and public building fire alarm installations, the unit mounts inside a white steel enclosure with pre-drilled cable entry points and fixing lugs for wall mounting. The PSU monitors mains supply, output load, battery condition and charger operation, with four dedicated LED indicators on the front panel showing mains status, output fault, battery fault and charger fault conditions.

The EN54-4 certification ensures the unit meets European fire safety standards for power supply equipment in fire detection and alarm systems, a requirement for most commercial fire alarm installations in the UK and EU. The 27.6V DC output voltage accounts for battery float charging at 24V nominal, allowing the PSU to maintain standby batteries at optimal charge while supplying the alarm system. The 5A output rating supports medium-scale fire alarm systems with multiple detector zones and notification appliances.

Specification
Product Net Weight (KG) 3.82
Product Gross Weight (KG) 3.95
Outer Gross Weight (KG) 3.73
Outer Length (mm) 400
Outer Width (mm) 360
Outer Height (mm) 100
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What does EN54-4 certification mean?

EN54-4 is the European standard for power supply equipment in fire detection and alarm systems. Certification to this standard is a legal requirement for most commercial fire alarm installations in the UK and EU, ensuring the PSU meets strict reliability, performance and safety criteria for life-safety applications.

Why is the output 27.6V when fire alarm systems are rated at 24V?

The 27.6V DC output voltage provides the correct float charging voltage for 24V standby batteries while simultaneously powering the fire alarm system. This voltage keeps the batteries at optimal charge without overcharging, ensuring they deliver full capacity during a mains power failure.

What do the LED fault indicators show?

The unit has four LED indicators on the front panel: mains status (confirms AC supply present), output fault (detects overload or short circuit on DC output), battery fault (indicates battery disconnection or failure to charge), and charger fault (signals internal charger circuit malfunction). These allow quick diagnosis during installation, commissioning and routine maintenance.

What size fire alarm system does the 5A output support?

A 5A output at 24V nominal provides 120W of total power for the fire alarm system and battery charging. This typically supports medium-scale systems with 10-20 detector zones, multiple notification appliances and auxiliary devices. Larger systems requiring higher current draw need a higher-rated PSU from the MAGfire range.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The MAGfire 24V 5A is a power supply unit certified to EN54-4 for use in fire detection and alarm systems. It delivers a regulated 27.6V DC output at up to 5A, providing both system power and battery charging for fire alarm control panels, detectors, sounders and auxiliary devices that require a compliant power source.

    Designed for commercial, industrial and public building fire alarm installations, the unit mounts inside a white steel enclosure with pre-drilled cable entry points and fixing lugs for wall mounting. The PSU monitors mains supply, output load, battery condition and charger operation, with four dedicated LED indicators on the front panel showing mains status, output fault, battery fault and charger fault conditions.

    The EN54-4 certification ensures the unit meets European fire safety standards for power supply equipment in fire detection and alarm systems, a requirement for most commercial fire alarm installations in the UK and EU. The 27.6V DC output voltage accounts for battery float charging at 24V nominal, allowing the PSU to maintain standby batteries at optimal charge while supplying the alarm system. The 5A output rating supports medium-scale fire alarm systems with multiple detector zones and notification appliances.

    Specification
    Product Net Weight (KG) 3.82
    Product Gross Weight (KG) 3.95
    Outer Gross Weight (KG) 3.73
    Outer Length (mm) 400
    Outer Width (mm) 360
    Outer Height (mm) 100
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What does EN54-4 certification mean?

    EN54-4 is the European standard for power supply equipment in fire detection and alarm systems. Certification to this standard is a legal requirement for most commercial fire alarm installations in the UK and EU, ensuring the PSU meets strict reliability, performance and safety criteria for life-safety applications.

    Why is the output 27.6V when fire alarm systems are rated at 24V?

    The 27.6V DC output voltage provides the correct float charging voltage for 24V standby batteries while simultaneously powering the fire alarm system. This voltage keeps the batteries at optimal charge without overcharging, ensuring they deliver full capacity during a mains power failure.

    What do the LED fault indicators show?

    The unit has four LED indicators on the front panel: mains status (confirms AC supply present), output fault (detects overload or short circuit on DC output), battery fault (indicates battery disconnection or failure to charge), and charger fault (signals internal charger circuit malfunction). These allow quick diagnosis during installation, commissioning and routine maintenance.

    What size fire alarm system does the 5A output support?

    A 5A output at 24V nominal provides 120W of total power for the fire alarm system and battery charging. This typically supports medium-scale systems with 10-20 detector zones, multiple notification appliances and auxiliary devices. Larger systems requiring higher current draw need a higher-rated PSU from the MAGfire range.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.